pdns/anadns.hh

   1 /*
   2  * This file is part of PowerDNS or dnsdist.
   3  * Copyright -- PowerDNS.COM B.V. and its contributors
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * In addition, for the avoidance of any doubt, permission is granted to
  10  * link this program with OpenSSL and to (re)distribute the binaries
  11  * produced as the result of such linking.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 #ifndef PDNS_ANADNS_HH
  23 #define PDNS_ANADNS_HH
  24 #include <boost/tuple/tuple.hpp>
  25 #include <boost/tuple/tuple_comparison.hpp>
  26 #include <string>
  27 #include <netinet/ip.h>
  28 #include <netinet/udp.h>
  29 #include "dnsparser.hh"
  30 #include "iputils.hh"
  31 #include "namespaces.hh"
  32
  33 struct QuestionIdentifier
  34 {
  35   QuestionIdentifier()
  36   {}
  37
  38   bool operator<(const QuestionIdentifier& rhs) const
  39   {
  40     return
  41       tie(d_source, d_dest, d_qname, d_qtype, d_id) <
  42       tie(rhs.d_source, rhs.d_dest, rhs.d_qname, rhs.d_qtype, rhs.d_id);
  43   }
  44
  45   // the canonical direction is that of the question
  46   static QuestionIdentifier create(const ComboAddress& src, const ComboAddress& dst, const MOADNSParser& mdp)
  47   {
  48     QuestionIdentifier ret;
  49
  50     if(mdp.d_header.qr) {
  51       ret.d_source = dst;
  52       ret.d_dest = src;
  53     }
  54     else {
  55       ret.d_source = src;
  56       ret.d_dest = dst;
  57     }
  58     ret.d_qname=mdp.d_qname;
  59     ret.d_qtype=mdp.d_qtype;
  60     ret.d_id=mdp.d_header.id;
  61     return ret;
  62   }
  63
  64   ComboAddress d_source, d_dest;
  65
  66   DNSName d_qname;
  67   uint16_t d_qtype;
  68   uint16_t d_id;
  69 };
  70
  71 inline ostream& operator<<(ostream &s, const QuestionIdentifier& qi)
  72 {
  73   s<< "'"<<qi.d_qname<<"|"<<DNSRecordContent::NumberToType(qi.d_qtype)<<"', with id " << qi.d_id <<" from "<<qi.d_source.toStringWithPort();
  74
  75   s<<" to " << qi.d_dest.toStringWithPort();
  76   return s;
  77 }
  78
  79
  80 #endif